I am an experimental astrophysicist with a strong passion for developing new instruments that will enable ground-breaking discoveries. My specialities are X-ray and gamma-ray polarimetry and spectroscopy, and applications to the observation of mass-accreting neutron stars and black holes. These objects are not only the brightest X-ray sources in our Galaxy, but also provide us with an opportunity to study the most extreme environments in the Universe.
I am the the PI of the SCOTTI project (Superconducting Titanium Imager), whose goal it is to build a balloon-borne hard X-ray telescope utilizing novel gamma-ray detectors using transition edge sensors. These cryogenic detectors will allow an unprecedented spectral resolution for soft gamma-rays. My dream is to one day build a hard X-ray space telescope with this kind of detector.
X-ray polarimetry promises insights into the geometry of astrophysical objects that are too small to be imaged by any telescope at any wavelength. I am the instrument scientist of the balloon-borne hard X-ray polarimeter X-Calibur. This instrument will measure the X-ray polarization of several Southern Hemisphere sources during its first long-duration balloon flight. A follow-up mission called XL-Calibur will make much more detailed measurements of several sources during multiple Southern and Northern hemisphere flights. I am also part of the science team of the Imaging X-ray Polarimetry Explorer, a NASA satellite mission that will explore the polarization of X-rays in the 2-8keV energy band, scheduled for launch in early 2021.
Finally, I like to use astrophysical observations to test fundamental laws of Physics. For example, I have written several papers using time-of-flight measurements of gamma-rays and various polarization measurements in the optical band to constrain violations of Lorentz invariance, the fundamental symmetry of Einstein's theory of Special Relativity.
Ph.D., Physics, Humbolt University of Berlin (Humboldt-Univrsitat zu Berlin)
Photodetectors & Optical Sensors
Radiosources, Infrared, X-ray, Gamma Ray
Kislat, F. (2018). Constraints on Lorentz Invariance Violation from Optical Polarimetry of Astrophysical Objects. SYMMETRY-BASEL, 10(11). doi:10.3390/sym10110596
Kislat, F., Abarr, Q., Beheshtipour, B., De Geronimo, G., Dowkontt, P., Tang, J., & Krawczynski, H. (2018). Optimization of the design of X-Calibur for a long-duration balloon flight and results from a one-day test flight. Journal of Astronomical Telescopes, Instruments, and Systems, 4(01), 1. doi:10.1117/1.JATIS.4.1.011004
Marin, F., Dovčiak, M., Muleri, F., Kislat, F. F., & Krawczynski, H. S. (2018). Predicting the X-ray polarization of type 2 Seyfert galaxies. Monthly Notices of the Royal Astronomical Society, 473(1), 1286-1316. doi:10.1093/mnras/stx2382
Kislat, F., Beheshtipour, B., Dowkontt, P., Guarino, V., Lanzi, R. J., Okajima, T., . . . Krawczynski, H. (2017). Design of the Telescope Truss and Gondola for the Balloon-Borne X-ray Polarimeter X-Calibur. Journal of Astronomical Instrumentation, 06(02), 1740003. doi:10.1142/S2251171717400037
Kislat, F., & Krawczynski, H. (2017). Planck-scale constraints on anisotropic Lorentz and invariance violations from optical polarization measurements. Physical Review D, 95(8). doi:10.1103/PhysRevD.95.083013
Aartsen, M. G., Abbasi, R., Abdou, Y., Ackermann, M., Adams, J., Aguilar, J. A., . . . Zoll, M. (2013). First Observation of PeV-Energy Neutrinos with IceCube. Physical Review Letters, 111(2). doi:10.1103/PhysRevLett.111.021103
Aartsen, M. G., Abbasi, R., Abdou, Y., Ackermann, M., Adams, J., Aguilar, J. A., . . . Zoll, M. (2013). Search for Dark Matter Annihilations in the Sun with the 79-String IceCube Detector. Physical Review Letters, 110(13). doi:10.1103/PhysRevLett.110.131302
Abbasi, R., Abdou, Y., Abu-Zayyad, T., Ackermann, M., Adams, J., Aguilar, J. A., . . . Zoll, M. (2012). An absence of neutrinos associated with cosmic-ray acceleration in γ-ray bursts. Nature, 484(7394), 351-354. doi:10.1038/nature11068
Abbasi, R., Abdou, Y., Abu-Zayyad, T., Adams, J., Aguilar, J. A., Ahlers, M., . . . Zarzhitsky, P. (2011). Measurement of the atmospheric neutrino energy spectrum from 100 GeV to 400 TeV with IceCube. Physical Review D, 83(1). doi:10.1103/PhysRevD.83.012001
Abbasi, R., Ackermann, M., Adams, J., Ahlers, M., Ahrens, J., Andeen, K., . . . Yoshida, S. (2009). The IceCube data acquisition system: Signal capture, digitization, and timestamping. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 601(3), 294-316. doi:10.1016/j.nima.2009.01.001